“A STUDY THE EFFECT OF ROLE AMBIGUITY OF TEACHER’S ON THE ACADEMIC ACHIEVEMENT OF SECONDARY SCHOOL STUDENTS”. International Journal of Food and Nutritional Sciences, [S. l.], v. 12, n. 1, p. 6497–6503, 2023. Disponível em: https://www.ijfans.org/index.php/Journal/article/view/2477. Acesso em: 23 sep. 2026.